Threshing machine.



No. 779,458. PATENTED JAN.'10, 1905. G. ANDERSON.

THRESHING MACHINE.

APPLICATION FILED MAY 26. 1903.

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El QF @Mmm No. 179,458. PATBNTED JAN. 1o, 1905. G. ANDERSON.

THRESHING MACHINE.

APPLICATION FILED MAY ze. 1903.

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UNITED STATES Patented January 10, 1905.

GUSTAVE ANDERSON, OF WELLS, MINNESOTA.

THRESHING-MACHINE.

SPECIFICATION forming part of Letters Patent N o. 779,458, dated January10, 1905. Application filed May 26, 1903. Serial No. 158,766.

To tl whom, it may concern.'

Be it known that I, GUsTAvE ANDERSON, a citizen ofthe United States,residingat lVells, in the county of Faribault and State of Minnesota,have invented certain new and useful Improvements inThreshing-lVlachines; and I do hereby declare the following to be afull, clear, and exact description-of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My present invention relates to threshingmachines, and has for itsobject to improve the same in the several particulars hereinafter noted.

To such ends the invention consists of the novel devices andcombinations of devices hereinafter described,and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several views.

Figure 1 is a longitudinal central section of the improvedthreshing-machine, some parts being shown in diagram and some only bydotted lines. Fig. 2 is a plan view of the Liish-back shaker, some partsbeing broken away. Fig. 3 is a plan view of the straw-delivery conveyer,showing the ends of the conveying-belt disconnected and straightenedout. Fig. 4 is a plan view of the vibrating feedtable which delivers tothe threshing-cylinder and concave, and Fig. 5 is an enlarged sectionshowing the straw-delivery conveyer in longitudinal vertical section.

In Fig. 1 the numeral 1 indicates the case, and the numeral 2 thewheels, of the thresher, the wheels being shown by dotted lines.

rlhe numeral 3 indicates an ordinary threshing-cylinder, and the numeral4 its coperating toothed concave.

The numeral 5 indicates a rotary beater located at the rear of thecylinder 3.

The numeral 6 indicates a secondary threshing-cylinder, and the numeral7 its coperating toothed concave, which parts are located at the rear'ofthe beater.

The numeral 8 indicates the vibrating grainpan, which extends from frontto rear of the machine and is provided with a pivoted rear end Section8a. The grain-pan is shown as suspended by links 9 and a lever 10, thelatter of which is indicated by dotted lines. The said lever 10 (infact,there are two such levers, one on each side of the machine) ispivotally fulcrumed at its intermediate portion and connected at itslower end to the sieve-shoe 11, which shoe is shown as supported at itsrear end by links 12, of which but one is shown.

The unthreshed grain is fed to the cylinder 3 and concave 4 byavibratingfeed-board 13, having serrated lOngitudinally-extended bars or ribs 14,the rear ends of which project beyond the serrated bottom of the saidboard and terminate in close proximity to the said cylinder. As shown,the said feed-table is supported from the case 1 by depending links 15,attached to the rear edge thereof, and by suspending-links 16, attachedto the receiving edge thereof, and to brackets 17 on the sides of thecase. In the drawings but one link and one link 16 are shown. Avibrating motion may be imparted to the feed-table 13 from a crank-shaft18, suitably mounted on the case 1 and connected to said table by apitman 19. A short inclined lfeed-board 2O is secured to the inner edgeof the feed-table 13 and terminates close to the forward edge of theconcave 4. The grain and straw from the cylinder 3 and concave4 isdelivered onto the first fish-back section of a vibrating shaker 21. theframe of which is supported from the case by links 22. Vibrating'motions are imparted to the feed-pan 8 and shaker 21, respectively,through pitmen 23 and 24, both of which are driven by a crank-shaft 25suitably mounted in the under framework of the case 1.

rlhe numeral 26 indicates a fan which delivers blasts onto the screensllaof the shoe 11.

The straw delivered from the last fish-back section of the shaker 21 isdropped onto an endless conveyer of novel construction, which in itsbest form comprises as follows: An inclined frame made up oflongitudinallyextended parallel bars 27, set edgewise and tied togetherby cross-bars 28, is rigidly secured to the sides of the case l in theposition indicated in Fig. 1. The bars 27 at the eX- treme sides of theframe are heavier than the intermediate bars and are projected beyondIOO the ends of the same, and in the said projecting ends thereof arejournaled rollers 29, one of which is provided with a projecting shaft29 and a pulley 30; over which a power-driven belt (not shown) will runto cause the said roller to act as a driving member for the endlessconveyer, presently to be noted. The upper surfaces of all of the bars27 are undulated, as best shown in Fig. 5, but also in Fig. l, for animportant purpose. which will presently appear. I/Vorking over therollers 29 and over the undulated bars 27 is an endless slat-and-beltconveyer 31, the belts of which are drawn taut, so as to givethedriving` members of thel said rollers the proper frictional contacttherewith.

It should have been noted that the serrated bars of the iirst fish-backsection of the shaker 21 diverge reawardly, so that in acting' on thestraw they will havea tendency to spread the same laterally. Runningmotions of the several parts of the machine may be 'imparted in theusual way, not necessary for the purposes of this case to furtherconsider.

'Ihe unthreshed grain delivered to the primary threshing-cylinder 3 andconcave 4L by the vibrating feed-table 13 will be held back with a sortof a stripping action by the projecting rear ends of the serrated bars14 of the said table. In other words, the grain will not be fed to thecylinder in piles or irregular quantities, but part thereof will be heldback by the said projecting ends of the bars, while some thereof ispassing between the bars. rIhe feed-supply ofthe grain to thethreshingcylinder and concave is in this way evened up and renderedregular and constant. The straw and grain passing from the primarycylinder and concave will pass onto the diverging serrated bars of thefirst section of the shaker and will also be subjected more or less tothe agitating action of the beater 4, which tends to shake out thethreshed grain from the straw.

From the lirst section of the shaker the straw will be passed throughthe secondary cylinder 6 and concave 7, which will loosen up andseparate the grain from the straw and complete the threshing of anygrain which may have passed unthreshed through the primary cylinder andconcave.

From the secondary cylinder and concave `the straw passes onto thesecond section of the shaker 21, from thence to the third, thence to thefourth, and from the fourth section onto the endless conveyer at therear end of the machine. In passing from the bars 21 of the successivesections of the shaker the straw is successively dropped, with atendency to loosen up and precipitate whatever grain may be commingledwith the straw. The precipitated grain of course falls onto the feed-pan8 and is fed rearward to the openwork pivoted section 8a thereof,through which it passes onto sieves 11u of the shoe 11, from whence itis conducted and handled in the usual way. The straw passing' onto theendless conveyer 31 is discharged by said conveyer (not shown) or at therear end of' the machine in case a stacker is not provided. Thetransverse bars of the conveyer 31 in passing over the undulations ofthe bars or skids 27 rise and fall, so that they shake up the straw andinsure the dropping of such of the grain as may still be carried by thestraw onto a forwardly-inclined deck 32, secured to the sides of thecase below the said conveyer in position to discharge the grain onto thesection 8 of the grain-pan.

It will of course be understood that the machine above described iscapable of modiiication within the scope of my invention as herein setforth and claimed.

Vhat I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

l. In a threshing-machine, the combination with laterally-spacedlongitudinally-eXtended bars having undulated upper edges, of an endlessconveyer working over said bars, substantially as described.

2. In a threshing-machine, the combination with laterallyspacedlongitudinally-eXtended bars 27 and rollers 29 journaled in theprojecting ends of the outside members of said bars, said bars havingundulated upper edges, of the endless slat-and-belt conveyer 3l workingover said rollers, and over the undulated upper surfaces of saidbars-27, substantially as described.

3. In a threshing-machine, the combination with a Vibrating' shakerhaving inclined serrated feed.bars, of a conveyer receiving from saidshaker, and comprising a plurality of laterally spaced longitudinallyextended bars having undulated upper edges, and an endless Slat-and-beltconveyer working over the said bars and receiving working vibrationstherefrom, substantially as described.

In testimony whereof I aiiix my signature in presence of two witnesses.

GUSTAVE ANDERSON.

Witnesses:

D. A. ODnLL, G. H. SIMON.

